Function collectDirectives

test/angular/1.6/angular.js:9385–9475

* Looks for directives on the given node and adds them to the directive collection which is * sorted. * * @param node Node to search. * @param directives An array to which the directives are added to. This array is sorted before * the function returns. * @param a

(node, directives, attrs, maxPriority, ignoreDirective)

     * @param {number=} maxPriority Max directive priority.
     */
    function collectDirectives(node, directives, attrs, maxPriority, ignoreDirective) {
      var nodeType = node.nodeType,
          attrsMap = attrs.$attr,
          match,
          nodeName,
          className;

      switch (nodeType) {
        case NODE_TYPE_ELEMENT: /* Element */

          nodeName = nodeName_(node);

          // use the node name: <directive>
          addDirective(directives,
              directiveNormalize(nodeName), 'E', maxPriority, ignoreDirective);

          // iterate over the attributes
          for (var attr, name, nName, ngAttrName, value, isNgAttr, nAttrs = node.attributes,
                   j = 0, jj = nAttrs && nAttrs.length; j < jj; j++) {
            var attrStartName = false;
            var attrEndName = false;

            attr = nAttrs[j];
            name = attr.name;
            value = attr.value;

            // support ngAttr attribute binding
            ngAttrName = directiveNormalize(name);
            isNgAttr = NG_ATTR_BINDING.test(ngAttrName);
            if (isNgAttr) {
              name = name.replace(PREFIX_REGEXP, '')
                .substr(8).replace(/_(.)/g, function(match, letter) {
                  return letter.toUpperCase();
                });
            }

            var multiElementMatch = ngAttrName.match(MULTI_ELEMENT_DIR_RE);
            if (multiElementMatch && directiveIsMultiElement(multiElementMatch[1])) {
              attrStartName = name;
              attrEndName = name.substr(0, name.length - 5) + 'end';
              name = name.substr(0, name.length - 6);
            }

            nName = directiveNormalize(name.toLowerCase());
            attrsMap[nName] = name;
            if (isNgAttr || !attrs.hasOwnProperty(nName)) {
                attrs[nName] = value;
                if (getBooleanAttrName(node, nName)) {
                  attrs[nName] = true; // presence means true
                }
            }
            addAttrInterpolateDirective(node, directives, value, nName, isNgAttr);
            addDirective(directives, nName, 'A', maxPriority, ignoreDirective, attrStartName,
                          attrEndName);
          }

          if (nodeName === 'input' && node.getAttribute('type') === 'hidden') {
            // Hidden input elements can have strange behaviour when navigating back to the page